Bark-removing cutter reciprocable over step-by-step rotatable log



June 2, 1953 P. WILSON BARK-REMOVING CUTTER RECIPROCABLE OVER STEP-BY-STEP ROTATABLE LOG 6 Sheets-Sheet 1 Filed April 16, 1951 ATTORNEY-5.

June 2; 1953 P. WILSON 2,640,516

BARK-REMOVING CUTTER RECIPROCABLE OVER STEP-BY-STEP ROTATABLE LOG Filed April 16, 1951 6 Sheets-Sheet 2 PRICE M/IL so/v,

INVENTOR BY 5 M ATTORNEYS.

June 2, 1953 P. WILSON 2,540,516

BARK-REMOVING CUTTER RECIPROCABLE OVER STEP-BY-STEP ROTATABLE LOG 6 Sheets-Sheet 5 Filed April 16, 1951 Pine: WILSON,

INVENTOR.

BY s ATTORNEYS.

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6 Sheets-Sheet 4 N in P. WILSON BARK-REMOVING CUTTER RECIPROCABLE OVER STEP-BY-STEP ROTATABLE LOG June 2, 1953 Filed April 16, 1951 PRICE- W/z S0/V, I N VENTOR;

ATTORNEYS.

June 2, 1953 P. WILSON BARK-REMOVING CUTTER RECIPROCABLE OVER STEP-BYFSTEP ROTATABLE LOG I 6 Sheets-Sheet 5 Filed April 16, 1951 ATTORNEYS.

travel of the carriage andthe cutting means" Patented June 2,

UNITED STATES PATENT OFF-ICE i i 2,640,516 I v v i BARK-REMOVING CUTTER REoIPROCABLE'f OVER STEP-BY-STEP ROTATABLE LQG v l Price Wilson, Lexington, N. C., assignor ofonehalf to Linwood Manufacturing 00.; Linwood, N. 0., a corporation of North Carolina I v 10 Claims. ((11. 144- 208) This invention-- relates to woodworking machinery and more especially to animproved machine for peeling logs for removing the bark therefrom preparatory to the logs being turned down to form veneer sheets therefrom.

Heretofore, in order to prepare a log for veneer manufacturing machines and the like, it has been necessary to subject the log to a steam bath for a relatively long period whereupon the bark would usually fall off, or a large number of operators has been required to remove the bark from the logs with axes or draw knives so as to properly condition the logs for the veneer cutting machines. This has not only been a time consuming task but has required a relatively large number of operators and has often resulted in the surface of the. logs being rather severely indented by the draw knives'or axes used in performing this operation with the result that the first layer of veneer removed from the log would have to be discarded.

It is, therefore, an object of this invention to provide a machine for removing bark from logs whether or not the logs have been subjected to steam, which machine may be easily and eco-'. nomioally constructed and which may be operated by only one or two operators'thus rendering the bark removing operation relatively economical and simple.

It is another object of this invention to provide a log peeling machine having means for supporting and imparting rotation to a substantially cylindrically-shaped workpiece such as a log, in a step-by-step manner, and also having a vertically movable and horizontally movablef g carriage disposed above the log so'positioned, and rotatable cutting means carried by the. .carriage whereby. upon a log being positioned on the supporting means therefor, the carriage may be lowered to where the cutting means carried thereby will remove a predetermined amount of stock from the periphery of the log as the carriage is subsequently moved longitudinally of said log in a reciprocatory manner. The means for imparting step-by-step rotation to the log only operates to impart a step thereto followin each bark removing pass of the carriage. a

It is still another object of this invention to provide a machine of the type described that can -mounted thereon, and, thus insuring removalof means for imparting manually controlled stepby-step rotation to the log. The stationary frame also carries a vertically movable frame or elevator'which is manually controlled as to its vertical position and on which a manually controlled horizontally movable carriage is provided, this carriage having a cutting means depending therefrom and mounting means for imparting rotation to the cutting means to thus remove the also handle tapered loss, sin e mea s ar br vided for tilting the supporting means for the log, thereby tilting the longitudinal ax s of the log and presenting the upper-surface of the lo in substantially-parallel relation to the path of bark from the upper surface of the log upon each bark removing'pass of the carriage, the log being rotated a step'following each alternate reciprocation of the carriage to the iinitialposition of its operating cycle.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds when taken in connection with the accompanying drawings, in which-- Figure 1 is a side elevation of the improved log peeling machine; I

Figure 2 is an enlarged front end elevationof the machine looking at the right-hand side of Figure 1;

Figure 3 is an enlarged rear end elevation of the machine looking at the left-hand side of Figure 1, some of the parts in the'background thereof being omitted for purposesof clarity; v

Figure 4is a sectional plan view of the machine and is taken substantially along the-line 4-4 in Figure 1;

Figure 5 is another sectional plan'vie'w of the machine and is taken along the line 5-5" in- Figure 1 .v

Figure 6 is anenlarged vertical sectional .view taken substantially along the line 66' in Figure 1; I i

Figure 7 is an enlarged fragmentary vertical sectional view taken substantially along the line 1--1 of Figure 6;

Figure 8 is a schematic illustration showing the electrical connections between the various electric motors associated with the present machine and theswitches for controlling the same.

Referring more specifically to the drawings, the

numeral Ill broadly designates a stationary-=01 fixed frame wherein the various partsthereof, to be presently "described, may be welded or otherwise suitably secured to each other. Hereinafter, the various frame members which are referred to as I-beams, channel bars, and angle bars, may be of any desired shape to produce the required results.

The frame it! comprises transversely spaced longitudinally extending frame members H and I2, opposed ends of which are joined by transverse frame members I 3 and [4 which form the base of the machine. Opposed ends of the transverse frame members I3 and 14 support the lower ends of respective I-beams 15, I and ll, 18 which extend upwardly and support the opposed ends of respective pairs of closely'spaced transversely extending channel bars 20, 2| and 22, 23. The flanges of the channel bars 29, 2| and 22, 23 preferably face inwardly towards each other and their proximate edges are spaced from each other for purposes to be later described.

The floor or surface F on which the frame It] -rests (see Fig. 6) should be disposed at a lower elevation than the adjacent floor or surface which is indicated at PM so that the surface F-l maybe at substantially the same level as the upper surfaces of a pair of transversely spaced longitudinally extending frame members 25, 26 which comprise a tiltable log supporting frame or table designated broadly as 21. The frame members 25, 26 are shown in the form of I-beams, and opposed ends thereof are suitably secured, as by welding to the opposed ends of respective channel bars 30,- 3I. The lower surfaces of the longitudinally extending frame members 25, 26

are also bridged by transversely extending frame members 32 to 38, inclusive, which are spaced from each other longitudinally of the frame members 25, 26 and are suitably secured thereto as by welding. The members 32, 33, 34, are shown in the form of angle bars, 3-! and 38 are shown in-the form of channel bars and members 35, 3B are shown'in thefo-rm of I-beams (Figure 1-).

The tiltable frame 2'l is supported for rocking movement or oscillation on the transversely spaced longitudinally extending framemembers Hand [2. In this instance, bearing blocks 42, 43 are suitably secured to the lower surfaces of the respective longitudinally extendin frame members 25, 26, as by screws 44. A pivot shaft 45 is fixed in the blocks 42 and 43 and is oscillatably mounted in bearing blocks 45 and 41 which are suitably secured, as by welding, to the upper surfaces of the longitudinally extending frame members H, 12 of the fixed frame Ill. The log supporting frame 21 is supported'for oscillation for purposes to be presently described.

The logsupporting frame 21 is held in the desired attitude relative to the longitudinally extending frame members I I and 12 by a threaded shaft 50 (Figure 2) which threadably penetrates the upper horizontal flange of the transverse channel bar 32 and which extends from a suitable gear reduction unit 5! driven by an electric motor I 52. The gear reduction unit5l and the electric motor 52 are of usual construction and a detailed description thereof is deemed unnecessary. The

- the shaft 50 extends. Opposed ends of the bars 6!) and 6! are suitably secured, as by welding, to vertically disposed support plates 33 and 64 which extend downwardly and are suitably secured, as by welding, to the longitudinally extending frame members H and [2, respectively, as well as being secured to the inner surfaces of the vertically dis posed I-beams l5 and I6, rfispectively. The electric motor 52 is controlled by a manually operable double pole snap switch 65 (Figures 1, 5 and 8) which is provided with circularly spaced contact members 35a to 65d, inclusive. The switch 65 (Figure 8) is also provided with an oscillatable bus bar 56 which, at times, is adapted to effect the flow of electrical energy between the contacts 65a and 65d and at other times to effect a circuit between contacts 55b and 650. The wires 53 and 54 from the electric motor 52 are connected to the respective contact members 65c and 65b and the contact members 650 and 65d have respective wires 51 and 68 connected thereto which extend downwardly in Figure 8 and are-connected to respective lead wires 72 and 73. The wires 55 and 53-from the electric motor 52 are connected intermediate the ends of the wires stand 6T, respectively. The lead wires 12 and F3 have a master switch 13 interposed therein and extend from a suitable connector 15 which is adapted to be connected or plugged into a suitable source of electrical energy, not shown.

Upon the bus bar 66 effecting a circuit between the contacts 65a and 65:1 in the switch 65, the threaded shaft 53 (Figure 2) will rotate in one direction so as to elevate the corresponding end of the log supporting frame 21. It is obvious that upon the bus bar 56 being positioned so as to effect a circuit between the contacts 65b and 550, the shaft 50 would be caused to rotate in the opposite direction to lower the log supporting frame 21.

Referring to Figures 1, 2 and 4, it will be observed that a gear reduction reversing motor 83 is suitably secured, as by screws Bl, to the upper surfaces of the spaced transverse frame members 33 and 34. This motor 30 has wires 82 to 35, inclusive, extending therefrom, the wires 32 and 83 being connected to respective spaced contact members Bla and 81b of a double pole snap switch 37 (Figures 5 and 8) which also has spaced contact members 810 and Bid thereon. The switch Bl also has a manually movable bus bar 88 thereon which, at times. will effect a circuit between the contacts 81b and 81d and which will, at other times, effect a circuit between the contact members 81a and 810. Wires SI and 92 are connected to the respective contact members 310 and 31d and their other ends are connected tothe respective lead wires '12 and 13. The wires 84 and are connected intermediate the ends of the respective wires 9! and 92.

Referring again to Figure 4, it will be observed that the gear reduction motor 82 has a shaft 94 extending therefrom on which a sprocket wheel 95 is fixedly mounted. This sprocket wheel 95 has a sprocket chain 96 mounted thereof: which is also mounted on a sprocket wheel '97 fixedly mounted on a shaft [00. The shaft Hill extends longitudinally of and .in parallel relation to the frame member 25 of the log supporting frame 2! and is rotatably mounted in a plurality of hearing blocks I01, there being one of each of the bearing blocks l0! suitably secured, as by screws 102, to the upper surface of each of the transverse frame members 34 to 38, inclusive.

The shaft Hill has a pair of traction wheels I34 and I05 fixedly mounted thereon which are shown in the form of sprocket wheels.

- and 6). -I-beams I2I and 122 serveas trackways for a wheeled carriage designated broadly at I24 and These traction wheels I 04 and I05 are disposed between the bearing blocks IOI which are mounted on the respective transverse frame members 35, 36 and 31, 38. A pair of idler traction wheels I06 and I01, which are also shown in the form of sprocket wheels are fixedly mounted on a longitudinally extending shaft IIO disposed in horizontally spaced relation to the shaft I00. The shaft H is rotatably mounted in bearing blocks III, one of each of which is suitably secured, as by screws H2, to the upper surface of the corresponding transverse frame members 36'to 38, inclusive. The log or substantially cylindrically-shaped workpiece is indicated at W and may be rolled from the surface F-I (Figure 6) over the.corresponding longitudinally extending frame member 25 or 26 of the 10% supporting frame 21 to be sup ported by and between the traction wheels I04 and I06 and I and I01.

It is thus seen that, upon the bus bar 88 being positioned so as to effect a circuit between the contacts 81b and 81d, the shaft 04 of the motor 80 will rotate in one direction so as to impart rotation to the log or workpiece W in one direction, say, a counter-clockwise direction in Figure 6, and, upon the bus bar 88 being positioned so as to effect a circuit between the contact members 81a and 810, the shaft 04 will rotate in the opposite direction so as to cause the traction wheels I04 to I 01,'inc1usive, to rotate in a c0unterclockwise direction in Figure 6 and to, in turn, cause the workpiece W to rotate in a clockwise direction.

It is evident that, if the workpiece W is of smaller diameter at one endthereof than it is at its other end, the upper surface thereof should be disposed in a, substantially level plane throughout its length and, therefore, the reversing motor 52 may be energized in the manner heretofore described so as to raise or lower the right-hand end of the'log supporting frame 21 in Figure l to accordingly cause the upper surface of the workpiece W to be disposed in a substantially horizontal plane.

Vertically movable frame and cutting device carriage A vertically movable frame or elevator designated broadly at I20 is mounted for vertical movement relative to the fixed or stationary frame I0. This vertically movable frame I20 has a pair of transversely spaced longitudinally extending frame members I2I and I22 which are shown in the form of I-beams (Figures 1, 3, 5 The lower horizontal flanges of these which will be later described in detail.

Opposed ends of the longitudinally extending frame members I2! and I22 of the vertically movable frame I20 rest upon and are suitably secured to transverse bars I25 and I26. Opposed ends of the bars I25 and I26 are suitably seends of respective frame members I35, I36 (Figures 3 and 6) suitably secured thereto as by welding, these frame members 'I 35, I36 also being shown in the form of channel bars.

Since the upper channel bars I33, I34 support the elevator I20, they are reenforced by respective suitable diagonally disposed members I40, HI and I42, I43, the upper ends of which are welded to and spaced adjacent the medial portions of the respective channel bars I33, I34 and which extend downwardly in diverging relation and the lower ends of which are welded intermediate the ends of the respective vertically disposed channel bars I21, I28 and I3I', I32.

The lower ends of respective cables I45, I46 are suitably secured to the medial portions vof the transversely extending channel bars I33, I34 (Figures 3 and 6) by any suitable means, such as eye bolts I41. These cables I45, I46 extend upwardly and pass between the respective pairs of transverse channel bars 20, 2I and 22, 23 and then. over suitable rollers or grooved wheels I50,

I5I, respectively. The groovedwheels I50, I 5| are rotatably mounted on respective stub shafts I52, I53, opposed ends of which are fixedly mounted in longitudinally extending transversely spaced channel bars I54, I55 (Figures 1, 2 and 3).

The longitudinally extending channel bars I54, I55" are suitably secured, as by welding, to the upper surfaces of the channel bars 20 to 23, inclusive, and it will be observed in Figure 1' that the front or right-hand ends of the channel bars I54, I55 extend substantially beyond the transverse channel bar 20. The cables I45, I46 extend forwardly between the channel bars I54, I55 and pass over respective grooved pulleys or wheels I56, I51 and then extend downwardly. (Figure 1) and aresuitably secured to a'flanged reel or drum I60.

The reel I60 is rtatably mounted in bearing stands I6I, I62 which are'suitably secured to the upper surface of a support plate I63, which extends forwardly from the stationary frame I0 asshown in Figures 1 and 5. The rear or inner end of the support plate I63 is suitably secured,

as by welding, to the upper surface of a transverse channel bar I65, opposed ends of which are suitably secured, as by welding, to bars I66, I61 which extend inwardly and are welded to the outer surfaces of the respective vertically disposed frame members I5, I6 of the fixed or stationary frame I0. The outer edge of the support plate I63 is supported on a transversely extending frame memberl10, opposed ends of which are suitably secured, asf'by welding, to angularly disposed angle bars I1I, I12. These angle bars I1I, I12 extend downwardly and rearwardly at an angle and the lower ends thereof are welded to the transverse frame member I3 of the fixed frame I0.

One end of the reel I60 is defined by an internally toothed gear or ring ear I14 (Figures 1 and 2') which meshes with a pinion I15 fixedly mounted on one end of a stud shaft I16 which is rotatably mounted in the upper portion of the bearing stand I62. A relatively large spur gear I 11 is also fixedly mounted on the stub shaft I16 sprocket chain I extends to the rightinFig ure 2=-and is also mounted on av sprocket wheel I86 which is fixedly Imounted' on a motor s'h aft I81. duction reversing motor lat, which, as shown in Figure 8, has wires IQI to I54, inclusive, extending therefrom. This motor I90 is suitably secured to the upper surface of the support plate The ends of the wires IQI, I32 (Figure 8) remote from the motor I93 are connected to respective contact members Iilfia, I951? of a double pole snap switch I95. The ends of the wires I93, I34 remote from the motor I96 are connected intermediate the ends of respective wires 20b, 2M. The wires 2613, 2th are connected at one end thereof to respective contacts I36c, I96d of the switch I35 and the other ends thereof are connected to the respective lead wires E3, 12. The switch I36 is also provided with a manually rotatable bus bar I91, which. is employed in the same manner as that described for the bus bars 66, 88 associated with the'respective motors 52, Bil, for controlling the direction of rotation of the shaft I81 extending from the gear reduction reversing motor I98.

It is thus seen that, upon rotation being imparted to the shaft I81 in a clockwise direction in Figure 2, the gears iifl, I15 and I11 will rotate in a counter-clockwise direction which will take up on the cables I 45 and I46 to thus raise the vertically movable frame or elevator I29. It is evident that the elevator I26 will be lowered upon rotation of the motor shaft I81 in the opposite direction.

The carriage I 24 for the cutting mechanism comprises a pair of longitudinally spaced transverse axles 205, 236 which are bridged by a motor support plate 291 suitably secured to the lower surfaces of the axles 205, 286 as by bolts ZII], 2I I, respectively. These bolts 2H], 2H also serve to secure a pair of laterally spaced spacing bars or frame members '2I2, 2&3 to the lower surface of the motor support plate 201. The bolts 2 also serve to secure one end of bearing blocks 255, 2 It to the lower surfaces of the respective bars 2&2, 2I3, these bearing blocks 2I5, tit also being secured to the bars 2I2, 2 I3 by screws 2I'I.

Opposed ends of the axles 285,283 have respective flanged wheels or rollers 228, 22I rotatably mounted thereon which are adapted to ride on the lower flanges of the I-beams I2I, I22. Since considerable dust, sawdust and shavings may be thrown about by the cutting means, to be presently described, there is disposed adjacent diametrically opposed sides of each of the wheels 229, 22 I, the legs of substantally U-shaped cleaning bars 222, which are shown as being formed from strap material and which are secured, as by screws 223, to the lower surfaces of the axles 2&5, 236. It will be observed in Figure 6 that the legs of the substantially U-shaped cleaning bars 222 are disposed immediately adjacent the upper surfaces of the lower flanges of the I-beams I2 I22 to thus remove any accumulation of shavings and the like from the upper surfaces of the flanges of the I-beams I2I, I22 with movement of the wheeled carriage I24 in either direction.

The cutter head indicated broadly at 225 com prises a transverse shaft 225 which is rotatably mounted in the bearing blocks 2I5, 2H3 (Figures 6 and 7) and on which a blade holding member 22? is fixedly mounted between the bearing blocks 2I5, 216. This blade holding member 221 is shown in Figure 7 as being substantially rectangular in cross-section and has a plurality of cutting blades 23B suitably secured thereto, as by screws 23L In this instance, the blades 23!] are secured in suitable grooves in the four side sur- The shaft I81 projects from a gear re- 8 faces of the cutting blade holder 221 and each of the blades projects substantially beyond the edge of the cutting blade holder 221 to which the adjacent leading blade 230 is secured.

The shaft 226 extends to the left in Figure 6 beyond the bearing block 2 I 6 and has a pulley 233 suitably secured thereto which is engaged by a flat belt 234. The belt 234 extends upwardly and engages a larger pulley 235 which is fixedly mounted on a motor shaft 236 projecting from an electric motor 231. The electric motor 231 has wires 24!! and 24I (housed in a cable 29!!) extending therefrom (Figures 6 and 8). The wire 24!] is connected to one side of a manually operable switch 245 to the other side of which a wire 248 is connected. The ends of the wires 246 and 2M remote from the switch 245 and the motor 231, respectively, are connected intermediate the ends of the lead wires 13, 12, respectively. It is evident that the switch 245 is closed in order to cause rotation of the cutter head 225.

Now, in order to move the wheeled carriage I24 along the I-beams IZI, I22, the motor 231 has a bar 252 welded to the upper surface thereof, to which opposed ends of a sprocket chain 253 are connected. The lower reach of the sprocket chain 253 extends in opposite directions from the bar 252 and passes half around sprocket wheels 254, 255. There is provided a channel-shaped guide member 255 (Figure '7) which is suitably secured, as by welding, to the upper surface of the bar-252 and through which the upper reach of the sprocket chain 253 passes to thus prevent the upper reach thereof from engaging the lower reach of the sprocket chain 253. The sprocket wheel 255 is mounted for rotation between a pair of closely spaced angle clips 260 which are suitably secured, as by welding, to a transverse frame member 26!, opposed ends of which are welded to standards 252, which are shown in the form of vertically disposed angle bars. The angle bars 262 extend downwardly and are welded to the upper surfaces of the I-beam I2 I, I22.

These standards 262 are bracedby angularlydisposed angle bars 263, the upper ends of which are welded to the upper ends of the corresponding standards 262 and the lower ends of which are welded to the upper surfaces of the I-beams I2I, I22. The sprocket wheel 254 is fixedly mounted on a drive shaft 265 (Figures 1, 5 and 6) which is rotatably mounted in bearing blocks 266 suitably secured, as by screws 26?, to corresponding standards 210 which are also shown in the form of angle bars. The standards 21!! extend downwardly and their lower ends are welded to the upper surfaces of the I-beams I2I, I22. These standards 210 are also braced by angularly disposed angle bars 2' which are welded at their upper ends to the corresponding standards 210 and which are welded at their lower ends to the corresponding I-beams I2I, I22.

The drive shaft 265 extends outwardly beyond the vertical plane of the outer edge of the I-beam 4 2| and has a V-belt pulley 213 fixedly mounted thereon (Figure 6) on which a V-belt 214 is mounted. The V -belt 214 is also mounted on a pulley 215 which is fixed on a motor shaft 216 projecting from a gear reduction electric reversing motor 211. The motor 211 is suitably secured to the upper surface of a motor support plate 218 which extends inwardly in Figures 2 and 6 and is suitably secured, as by welding, to the lower surface of the frame member I2I of the elevator I20. The plate 218 is reenforced by gussets 219.

-The gear reduction electric reversing motor 211 9 has wires 288 to 283, inclusive, extending therefrom (Figures 1, 2, 5, 6 and 8). The wires 288, 28I extend upwardly from the motor 211, in Figure 8,.and are connected to respective contact members 285a, 2855 of a double pole snap switch 285 which is also provided with a manually oscillatable bus bar 286. The snap switch 285 is also provided with a pair of spaced contact members 2850 285d to which respective wires 281, 288 are connected.

.The ends of the wires 281, 288 remote from the switch 285 are connected to the lead wires-13, 12, respectively. The ends of the wires 282, 283 remote from the motor 211 are connected intermediate the ends of respective wires 281, 288. The direction of rotation of the shaft 216 extending from the gear reduction motor 211 is controlled by the bus bar 286 in the identical manner in which the motors 52, 88, I98 and 231 are controlled and a further description of its operation is therefore deemed unnecessary.

It is evident that, upon rotation being imparted to the shaft 216 in one direction, the shaft 285 may rotate in a clockwise direction to cause the lower reach of the sprocket chain 253 to move from right to left in Figures 1 and 7 to thus feed the cutter head 225 into the workpiece W as indicated in Figure 1, and, upon the cutter head 225 having moved beyond the left-hand or rear end of the workpiece W in Figure 1, the direction of rotation of the shaft 216 may then be reversed to cause the wheeled carriage I24 with the cutter head 225 to move from left to right in Figure 1 to where the cutter head will be disposed to the right of the right-handed end of the workpiece W.

A step in rotation is then imparted to the workpiece W for the desired distance and in the desired direction by manipulation of the bus bar 88 on the switch 81, which controls the-motor 88 for rotating the traction wheels I84 and I85 in the desired direction. Since the electric motor 231 on the wheeled carriage I 24 must move to and fro on the vertically movable frame I28 it is preferred that the cable 298, which extends from the electric motor 231 and which houses the wires 248 and'24l, be made flexible.

The cable 288 is shown in Figure 1 as extending upwardly and being suitably secured to the horizontally disposed channel bar I54 after which the cable 298 extends downwardly into a junction box 29L The junction box 29I may house the masterswitch 16 andmay also serve as a point to which all of the wires from the various motors 52, 88, I98, 231 and 211 may extend, after which the wires from these last-named motors may extend through a cable 292 downwardly to be connected to the respective switches 65, 81, I96, 245 and 285. The junction box MI and the cables 298 and 292 have been omitted from the schematic drawing in Figure 8 for purposes of clarity since it is a matter of choice as to the exact manner in which the wires from the respective motors 52,

88, I98, 231 and 211 may be connected to the corresponding switches. i

It will be observed in Figures 1, 2 and 5 that the'switches 65, 81, I96, 245 and 285 are suitably secured to the upper surface of a switch supporting plate 295 which is suitably secured, as by welding, to the upper surface of the transverse frame member or angle bar I65. These switches 65, 81, I96, 245 and 285 may be of any desired construction-and are shown in the drawings as being of a type, each having a lever associated therewith for manipulation by an operator for controlling the position of the corresponding bus bars as, 88, I31 and 285 and the switch 245 for controlling operation of the respective motors 52, 88, I98, 211 and 231.

It is thus seen that I proved machine for removing stock from the surface of a substantially cylindrically-shapedworkpiece which may be of substantially the same diameter throughout its length or which may be smaller at one end than at the other end and wherein the entire operation of the machine may be controlled by a single operator. For example,

the operator may first positionthe log orworkpiece W on the traction wheels I84 to I81, inclu-; V

21 substantially as shown in Figures 1, 2 and-6 after having raised sive, of the log supporting frame the elevator or vertically movable frame I28 by manipulation of the bus bar I91 (Figure 8) associated with the switch I96 (Figures 5 and 8 g v H After the log or workpieceW is positioned in 1 the vmanner heretofore described, the elevator may be lowered by reversing the motor I98 in the manner heretofore described to determinethe desired depth of cut to be made in the workpiece by the cutter head 225. It is to be assumed that the wheeled carriage I24 with the cutter head 225 7 is then disposed to the right of the right-hand end of the workpiece W in Figurel, and the op,-

erator then starts the motor 231 by manipula-I tion of the switch 245 to thereby cause the cutter j head 225 to rotate in a clockwise direction Figures 1 and '7. I

It is evident that in the event of the'workpiece W being of smaller diameter at one end thereof than it is at the other end thereof, "the switch 65 will then be manipulated by an operator to cause rotation of the threaded shaft 58 (Figure 2) in the desired direction for either raising or I lowering the corresponding end of the tiltable frame 21 until the upper surface of the workpiece W extends in a plane substantially parallel v to that of the path of travel of'the carriage I24. The motor 52 would then be stopped as well as the motor I98, and the operator would then energize the motor 211 by manipulation of the switch .8

285 to cause the shaft 265 to rotate in aclockwise direction in Figure 1. The sprocket chain 253 would then move the carriage I24 from right to left or rearwardly in Figures 1, 5 and '1 and the cutter head 225 would then remove stock from the uppermost portion of the workpiece W.

Upon the carriage I24 reaching the end of its stroke in a rearward direction, the operator would again manipulate the switch 285 to cause the shaft 265 to rotate in the opposite direction and to again return the carriage I24 with the cutter head 225 to its position adjacent the right-hand end of the workpiece W in Figure 1.

The operator would then manipulate the switch 81 to rotate the workpiece W in either direction for the desired distance so that a subsequent cut made by the cutter head 225 would remove stock from the upper surface of the workpiece W immediately adjacent the point at which stock has previously been removed therefrom. The workpiece rotating operation and the rearward and forward strokes of the carriage I24 would then be alternately repeated until the bark or some of the stock has been removed from the entire periphery of the workpiece W.

The elevator I28 would/then be raised and switches 65, 81, I96, 245 and 285 moved to opened position as shown in Figure 8, after which the i workpiece W could be removed from the traction wheels I 84 to I81, inclusive, by suitable grappling have provided an imthe I hooks or other devices in the hands of the-operator and replaced by another log or workpiece W to complete a cycle in the operation of the machine.

In the drawings and specification, there has been set forth a preferred embodiment of the invention and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being defined in the claims.

I claim:

1. Apparatus for removing stock from the upper surface of a workpiece comprising an elongated support for the workpiece, means for pivotally mounting the support for the work piece at a point substantially midway between its ends, means connected to one end of the support for swinging the support on its pivot, a vertically movable frame spaced above the support, a driven rotatable cutting means carried by the vertically movable frame, means for raising and lowering the vertically movable frame so as to position the cutting means for removing the desired depth of stock from the upper surface of the workpiece and means for moving the cutting means longitudinally of the workpiece for removing the stock therefrom.

2. Apparatus for removing stock from the upper surface of a workpiece comprising an elongated support for the workpiece, means for pivotally mounting the support for the workpiece at a point substantially midway between its ends, means connected to one end of the support for swinging the support on its pivot, a vertically movable frame spaced above the support, a driven rotatable cutting means carried by the vertically movable frame, means for raising and lowering the vertically movable frame so as to position the cutting means for removing the desired depth of stock from the upper surface of the workpiece, means for moving the cutting means longitudinally of the workpiece for removing the stock therefrom, and means for rotating the workpiece following each operation of the cutting means to thus present a different portion of the workpiece to the cutting means for each successive ut ing pe a ion.

3. Apparatus for removing stock from the periphery of a. Substantially ,cylindrically-shaped workpiece, such as logs and the like, comprisin an enlongated supporting frame for the workpiece, means for pivotally mounting the suprting. fram intermediate its ends, means connected to one end of the supporting frame for swinging the supporting frame on its pivot, a vertically movable frame spaced above the support, a driven rotatable cutting means carried by the vertically movable framefmeans for raising and lowering the vertically movable frame so as to position thecutting means for removing the desired amount of stockv from the upper surface of the workpiece, means for reciprocatorily moving the cutting means longitudinally of the workpiece for removing the stock therefrom and means for rotating the workpiece any predetermined distance following each cutting operation to thus present a different portion of the workpiece to the cutting means for each subsequent cutting operation.

4. Apparatus for removing stock from the periphery of a substantially cylindrically-shaped workpiece, such as logs and the like, comprising a supporting frame for the workpiece, means for pivotally mounting the supporting frame intermediate its ends, means connected to one end of the supporting, frame for swinging the supporting frame on its pivot, a vertically movable frame spaced above the support, a driven rotatable cutting means carried by the vertically movable frame, manually controlled electrically operable means for raising and lowering the vertically movable frame so as to position the cut ting means for removing the desired amount of stock from the upper surface of the workpiece, manually controlled electrically operable means for reciprocatorily moving the cutting means longitudinally of the workpiece for removing the stock therefrom and manually controlled "electrically operable means for rotating the workpiece a predetermined distance following each cutting operation to thus present a difierent portion of the workpiece to the cutting means for each subsequent cuttin operation.

5. Apparatus for removing stock from the periphery of a substantially cylindrically-shaped workpiece, such as a log and the like, comprising a supporting frame for the workpiece, means pivotally mounting the supporting frame intermediate its ends, a vertically movable frame spaced above the support for the workpiece and beneath which the workpiece is to be disposed when it is resting upon the support therefor, driven rotatable cutting means carried by the vertically movable frame, means for raising and lowering the vertically movable frame so as to position the cutting means for removing the desired amount of stock from the upper surface of the workpiece, means for moving the cutting means longitudinally of the workpiece for removing the stock therefrom, means for rotating the workpiece any predetermined distance following each cutting operation to thus present a different portion of the workpiece to the cutting means for each subsequent cutting operation, and means for tilting the frame for supporting the workpiece to simultaneously raise one end and to lower the other end of the workpiece to thereby position the upper surface of the workpiece in substantially parallel relation to the path of travel of the cuttin means in the event of the workpiece being of smaller diameter at one end than at the other end.

6. Apparatus for removing stock from the periphery of a substantially cylindrically shaped workpiece such as a log and the like comprising a support for the workpiece, a, vertically movable frame spaced above the support for the workpiece and beneath which the workpiece is to be disposed when it is resting upon the support there'- for, driven rotatable cutting means carried by the vertically movable frame, manually controlled electrically operable means for raising and lowering the vertically movable frame so as to position the cutting means for removing the desired amount of stock from the upper surface of the workpiece, manually controlled electrically operable means for moving the cutting means longitudinally of the workpiece for removing the stock therefrom, manually controlled electrically operable means for partially rotating the workpiece following each cutting operation to thus present a diiferent portion of the workpiece to the cutting means for each subsequent cutting operation and manually controlled electrically operable means for tilting the means for supporting the workpiece to thereby position the upper surface of the workpiece in substantially parallel relation to the path of travel of the cutting means in the event of the workpiece being of'smaller diameter atone and than at the other end.

71 A machine for removing stock from the periphery of a substantially cylindrically-shaped workpiece. comprising a fixed frame, a tiltable workpiece supporting frame oscillatably mounted on the fixed frame on a, transverse pivot disposed substantially midway its ends, radially and longitudinally spaced rotatable means carried'by the tiltable frame and on which the workpiece is to be disposed during the removal of stock therefrom, manually controlled means for imparting rotation to the spaced rotatable means to thereby impart rotation to the workpiece, a vertically movable frame spaced above the tiltable frame, manually controlled means for raising and lowering the vertically movable frame, a wheeled carriage carried by the vertically movable frame, a cutter head rotatably mounted on and depending from the wheeled carriage, manually controlled means for imparting rotation to the cutter head, manually controlled means for imparting reciprocatory horizontal movement to said carriage, whereby said vertically movable frame may be positioned to thereby position the cutter head for cutting the required depth of stock from the upper surface of the workpiece and said carriage may be moved parallel to the upper surface of the workpiece for removing stock therefrom and whereby said workpiece may be partially rotated between horizontal movements of the wheeled carriage to present a, different portion of the workpiece to the cutter head for removing stock therefrom, and means for swinging the workpiece supporting frame on its pivot to simultaneously raise one end and lower the other end to position the upper edge of the workpiece in a plane parallel to the path of travel of cutter head.

8. Apparatus for removing stock from the upper surface of a substantially cylindricallyshaped workpiece which may be tapered throughout its length, such as logs and the like, comprising a tiltable support for the workpiece including an elongated frame pivotally supported at its middle point, a pair of transversely spaced longitudinally extending shafts rotatably supported by the frame, at least two longitudinally spaced traction wheels fixed on each of the longitudinally extending shafts and forming a cradle for said workpiece manually controlled mechanically operable means for imparting rotation to at least one of said shafts for selected amounts to, in turn, impart rotation to the workpiece for selected amounts, manually controlled mechanically operable means for moving the elongated frame on its pivot for simultaneously raising and lowering the opposed ends of the elongated frame, a driven rotatable cutting means spaced above the elongated frame and means for moving the cutting means longitudinally of the workpiece for removing stock therefrom whereby, upon said workpiece being of smaller diameter at one end than at its other end, the position of the tiltable table may be varied to position the uppermost surface of the workpiece in parallel relation to the path of travel of the cutting means to facilitate the removal of stock from the upper surface of the workpiece for its entire length and whereby the workpiece may be rotated any predetermined amount following each cutting operation to present a different portion of the workpiece to the cutting means.

9. A machine for removing stock from the periphery of a substantially cylindrically-shaped workpiece comprising a fixed frame, a support 14?. carried by the fixed frame fro s upcoming a I workpiece, means carried by the workpiece supporting'frame for partially rotating the workpiece, a vertically movable frame spaced above I the support for the workpiece, manually controlled means for raising'and lowering the vertically movable frame,'a wheeled carriage carried by the vertically movable frame and mountedfor horizontal movement longitudinally of the 'ver-' tically movable frame and substantially parallel to the axis of the workpiece, a driven cutter head rotatably-mounted bn and depending from the wheeled carriage, means for imparting horizontal movement to said carriage comprising a first sprocket wheel disposed adjacent one end of said vertically movable frame and being rotatably mounted thereon, a second sprocket wheel disposed adjacent the end of the vertically movable frame remote from the end adjacent which the first sprocket wheel is disposed, a transverse shaft rotatably moufnted on the vertically movable frame and on which the second sprocket wheel is: fixedly, mounted, a sprocket chain mounted on and extending between the first and second sprocket wheels, a connection between one of the reaches of said sprocket chain and the wheeled carriage and manually controlled electrically operable means for imparting rotation to the shaft in either direction whereby, said vertically movable frame may be positioned to thereby position the cutter head for cutting the required depth of the stock from the upper surface of the workpiece and said carriage may be moved parallel to the upper surface of the workpiece for removing stock therefrom upon movement of the carriage in one direction and whereby said carriage with its cutter head may be returned to its original position so as to permit the workpiece to be partially rotated to present a different portion of the workpiece to the cutter head for removing stock therefrom.

10. A machine for removing stock from the periphery of a substantially cylindrically-shaped workpiece comprising a fixed frame, a tiltable workpiece supporting frame oscillatably mounted on the fixed frame, means carried by the tiltable workpiece supporting frame for partially rotating the workpiece, a shiftable frame vertically movable between the tiltable frame and a top portion of the fixed frame, manually controlled means for raising and lowering the vertically movable frame comprising cables connected to opposed ends of the vertically movable frame, pulleys carried by the fixed frame and spaced above the vertically movable frame and over which and from whence said cables pass to a point at one end of the machine, a reel rotatably mounted on the fixed frame and to which said cables are secured, a reversing motor carried by the fixed frame, mechanical connections between the reversing motor and said reel for imparting rotation to the reel in either direction and manually controlled means for controlling the motor so as to control the direction of rotation of the reel whereby, upon rotation of said reel in one direction the elevator will be raised and, upon rotation of said reel in the opposite direction, the elevator will be lowered, a wheeled carriage carried by the vertically movable frame, a cutter head rotatably mounted on and depending from the wheeled carriage, means for imparting rotation to the cutter head and manually controlled means for imparting horizontal movement to said carriage whereby said vertically movable f ame may be pesit qneclt ther by position the utter head 01? eut mg the required depth at tee s from the uppersurfa e of the workpiece and said carriage may be moved parallel to the upper surface of the workpiece for remeving stock therefrom and also whereby said workpiece may be partially rotated between herizone tel movements oi the wheeled carriage to Dresent a diflerent portion of the workpiece tn the cutter head.

PRICE WILSON,

References Cited in the file of this patent UNITED STATES PATENTS Name Date Holdreth V Apr. 1, 1902 Moravec June 190 Oeser at al. Apr. 1''! 1934 FOREIGN PATENTS Country Date Germany Nev. 19, 1935 

